Local Charge Transfer and Enhanced Light Emission of Monolayer MoS2 Hybridized with Copper Phthalocyanine Nanoparticles

The study of external doping and hybridization of 2-dimensional monolayer transition metal dichalcogenides (1L-TMDs) with various organic and inorganic nanostructures for modifying their optoelectronic properties is the hot... [ view full abstract ]

The study of external doping and hybridization of 2-dimensional monolayer transition metal dichalcogenides (1L-TMDs) with various organic and inorganic nanostructures for modifying their optoelectronic properties is the hot topic of research nowadays. However, hybridization of organic semiconducting nanostructure with 1L-TMDs are rarely reported. Organic semiconducting nanostructure and 1L-TMDs could be suitable for tailoring the optoelectronic properties of 1L-TMDs. In tis study, we synthesized organic semiconducting copper phthalocyanine (CuPC) nanoparticles (NPs) of size ~30 nm, using re-precipitation method, and decorated on 1L-MoS₂ grown by chemical vapor deposition (CVD) method. We observed about 6-fold enhanced in photoluminescence (PL) of 1L-MoS₂ from the CuPC NPs decorated regions as shown in Fig. 1. This enhancement of PL of 1L-MoS₂ in CuPC decorated region is mainly due to localized p-doping effect caused by CuPC NPs. Such organic nanostructure/1L-MoS₂ hybrid system could be suitable for future optoelectronic device applications. Detail will be presented.